platon



Jam-24,1928. 1,657,408

' J. E. PLATON WRITING AND DAWING PENCIL Filed Sept. 14. 1926 2 Sheets-Sheet l Jan. 24, 1928.

l J. E, PLATON WRITING AND DRAWING-PENCIL Filed Sept. 14, 1925 2 Sheets-Sheet 2 [Ly/f lay/* Eff/(fi [2g/ Z/ if 7 Patented Jan. 24, 1928.

UNITED STATES JOHN ERIK PLATON, F J'ONKOPING,

WRITING- AND DRl-.WIN'G PENCIL.

Application filed September' 14, 1926, Serial No. 135,476, and in Sweden September 4, 1925.

The given invention relates to a writing and drawing pencil with changeable pencil leads, aniline or lthe like, which are shoved forward to the pencil point or tip from 6 a magazine in the pencil by means ot an actuating member such as a pin or the like. In known pencils of this kind the means :tor feeding the lead forward into writing position and the storing oi the leads in the pencil are more or less complicated and impractical, whereas insertion ot new leads into the magazine is both inconvenient and time-wasting. The invention purposes to produce a pencil, which by its exceedingly simple construction and its sure and convenient operations avoids said inconveniences.

ln the accompanying drawing are shown some suitable embodiments ol' the invention. Figs. 1 and 2 show the pencil from two opposite sides with the lead in writing position. Fig. 3 is a view of the pencil, corresponding with Figure 1, wherein 1the lead may be considered used up and the actuating member' or pin shoved back a bit in order to allow a new lead ifi-0in the magazine to come into i'eeding position for the member or pin. In Figures l1 12 the pencil is shown taken apart. Thus Figure 4 shows the magazine tube, and Figs. 5, 6, and 7 show from three different sides the tip and a guiding member tor the member or pin connected therewith. Figs. 8 and 9 show, the latter in longitudinal section, a button or end-screw. Figs. 10, 11 and 12 show the actuating member or pin, Figure 11 being drawn in larger scale thany Figures and l2. Fig. 13 is a cross-section, taken on the line 13-13 of Figure 2. Fi g. 14 shows a modified embodiment of the tip and the guiding member for the actuating member or pin. Figures 1.519 show another embooiment of the invention. Figure 15 is aside view of the tip and the guiding member fior the actuating member or pin, which guiding member is joined to the tip. Fig. 16 shows in larger scale the outer end part of the guiding member. Figure 17 is a plan view of the parts according to Figure 15 with the end screw inserted in its place. ures 18 and 19 are cross sections on the lines 18-18 and 19-19 of Figure 15. y

The pencil is composed ot tour parts, namely the tip 1, which is provided with a longitudinal guiding member 9 extending Flea to the rear ot the pencil, a pin 2 with a suitable actuating member 13, a magazine tube r3 'and a button or end screw Il. The tip 1, Figures 5 and G, which is preferably of conical form, is solid and provided with a central bore or channel and is slit from the point a distance inwards, so that two resilient members or tongues 6 are formed, Fig ure 6. These members or tongues have as object, to hold the lead 7 in the tip. Because said members or tongues lie yieldingly against the lead, the latter may be moved into or out olf writing position without being spoiled. The tip 1 is provided with u hole 8 passing completely through it, transversely, through which hole, when a new lead is to be moved forward to the pencilpoint, may be observed iii the lead has come in to the bore or channel As above pointed out, a guide member 9 is provided, which is formed. integrally with the tip l, and is indicated at 9, Figures 6 and 9. The guide 9 is perforated by a central longitudinal slit 10, Figure 7, which extends along the entire length of the guide and is widened into a groove 11, Figures 5 and 13, which is situated substantially in the axis of the pencil and in alinement with the bore kor channel 5 in the tip l.

The pin 2 is slidably arranged in the groove 11 and provided with an actuating member' in the form of a semi-spl'ierical lug or the like 13 having a web portion, 12, Figures 1() and 11, slidably engaged in the slit 10. The member or lug 13, which at the movement of the pin slides against one side 111 of the guide 9, catches into corresponding threads on the inner side of the magazine tube 8, which encloses the guide 9, the curved face of the actuating member or lug 13 being provided with mutilated threads, substantially as shown 'for the purpose. The inner side ot the tube rests against a neck 15 o n the forward part guide and at the rear against an enlargement 17 on one side 16 of the guide. By turning the tube 3 in either direction, the member or pin is moved forwards or backwards in the groove 11 and is guided thereby by the web portion 12 of the part 13 engaged in the slit 10. As is evident of Figure 13, one side 16 oit the guide, toward which the groove 11 is open` is situated at such a distance from the tube wall, that a comparatively large magazine 1S,

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Figure' 13, is formed for the storing of the pencil leads, whereby the guide-side 16 serves as a bottom in said magazine. Between the guide side 14 and the magazine tube 3 is a space, Figure 13, closed oilfrom the lead magazine' 18 in which space the part` 13A isv movable. The slit and the groove 11 merge rearwardly into a threaded hole 19., Figures 5 and6, formed in the outer end of the enlargement 17, into which hole the button or end screw 4 is inserted, Figures la. Thisy button orl screw is providedl with a central. bore 20, Figure, 9, which is joined to the groove.11,so that the pin 2may--be moved out a distance through said bore, when anew lead is to be moved into feeding position for the pin.. llt .is to be here noted that the slit 10, which opens into the bottom of the lead receiving groove 11, is narrower than the diameter of the leadto be used in ythe pencil.

According to the modification shown in Eigure 14 the guide 91s arranged in such a way that the magazine for thel leads islarger.

The groove in the guide is here not placed in` the-.middle ofthe/pencil, and for that reason the channel fimay not go throi 'h the. axis of the tip either. It is evident from the drawing that by this embodiment the tip is not tapering equally 'towards the point round its entire circumference. This however doesnot detrimentally affect the writf dicated by 14 is turned upwards, Figures 1 and l the tip is provided with the number 1.` When the pencil'is held in this manner, the side of.y the guide indicated by 16 and thereby also the groove 11 are turned downwards, somthat the leads in the magazine lie against the inner side of the tube. In this position no lead may enter the groove and also thusl prevent the shoving outwards of the pin. By the pushing backwards of the pin, the

forwardpart ofthe groove 11 is liberated,k

so that, when the pencil' is turned Vcompletely round and. the side 16. of the guide is turned. upwards, a new lead may falL into the'groove in front ofthe forwardend of the shoved bach pin. The lass mentioned position of the pencil, which shown in Figure 2, is indicatedby the number 2 on the tip. Thereafter. the point ofthe pencil is` turnedi downwards, soA that the lead, which came into thev groove, may slide. down into In,V order to indicate this position,

the channel 5 in the tip. After it has been observed through the hole 8 that the lead-V has really entered the bore or channel 5, the pin 2 is moved forward in the groove 11 by turning the .tube 3, whereby its forward end the threaded member 13 present on the pin, hes against the neck 15 on the guide. Thereafter the button'or end screw 4 vis taken aw y, so that theleaos one by one may be put into the magazine 18 through thehole 19 and the grooveg11 joinedA thereto, theH rear part of: which groove is `liberated through the shoving forward ofthe pin. In the posi ion of the pin just described, when. the member 13 lies against the neck 15, the pin reaches so far back in the groove that although it permits the insertionV of new leads into the magazine, it prevents a lead' in the magazine from` falling into thegroore. During the insertion of the leads the pencil is hel so that thel side 16 ofthe guide,

against which the groove 11 is open, is turned'v douuiwards, Figures 1 and 3, so that the leads, in the order 1n which they are 1nserted, fall out of' the groove down,V against' Ahe inner wall ofthe tube 3. f To facilitate the insertionof the leads, the pencil should. naturally be held slanting with the point downwards. l.Vhen the inagazineis filled, the end screw 4 is pnt into its place and the -pin is shoved backwards (the side 16 of the guide should; still be turned' downwards) in order to leave place for a lead in the groove in front of the end of the pin. The inserting' of the lead inV the groove and its being shved forward into writing position takesY place in the manner formerly described.`

According to the embodiment shown in,

Figures 15-19, one side 16 of the. guide 9,

which side. is turned against the Ieadma azine, is provided with ashoulder or the like situatedl beside the lead grpove 11, which the shown embodiment. consistsfof aI projecting member 21, which stretches fromthe`A forward4 part of the guide 9 for a gooddistance backwards, and is providedl with, a, shoulder edge 22 alongn the groove.'` Instead of the longitudinal shoulder edge the guide can be provided` with two or'more projections, which form shoulders. The idea of this arrangementv is to facilitate the insertion of` a new lead in the groove 11 when a lead. isvfinished. When4 the lead in Sil) the magazine rolls against the shoulder edge 22, it fall-s immediately down into the groove. For this reason one can place a new lead in the pencil point very quickly.

On the same side of the guide 9 as the part 21 a thin plate or bridge 23 is situated above the groove, which plate 23 stretches from the rear end of the longitudinal member 21 to the swelling 17 and closes that part of the groove from the lead magazine. When the pin 2 is shoved far forwards against the pencil point, no lead therefore (be it whole or broken) from the magazine can fall down into the groove 11 back of the pin and hinder the pushing back of the pin, for instance when one shall make space for a new lead in the groove in front of the forward end of the pin.

The hole 19 for the end screw has according to this embodiment considerably greater diameter than in the embodiment first described and extends through the entire member 17, so that new leads may after the end screw has been removed, easily be inserted through the hole 19 on the plate or bridge 23 into the magazine. After the end-screw has been screwed in the hole 19, it prevents the leads in the magazine from falling out.

It is evident, that the described arrangements could be altered in many respects, without deviating from the important char'- acteristics of the invention.

Having now particularly described and ascertained the nature of my invention, I declare that what I claim is:

l. A writing and drawing pencil with changeable leads, which are adapted to be fed forwardly to the pencil tip from a magazine situated in the pencil by means of a member, characterized by the fact, that the member is movable in a groove in an elongated guiding member which extends from a tip at the forward part of the pencil to a joint adjacent the rear part of the pencil and which guiding member forms a bottom in the magazine which extends approxh mately the entire length of the guiding member so that the leads in the magazine lie immediately beside and above the groove,

but areprevented from entering the latter i the magazine is so arranged in the pencil that new leads, when the member is moved to a forwardly disposed position, may be inserted in the magazine through the roove and a hole alined therewith situated 1n the rear end of the pencil, without necessitating the pencils being taken apart.

3. A writing and drawing pencil according to claim l, characterized by the fact that the member is provided with an offset member disposed in engagement with the inner side of the nez-.gazine tube which is adapted to be rotated to move the member forwardly and rearwardly of the same.

4. A writing and drawing pencil according to claim 1, characterized by the fact that the guiding member is provided with one or several shoulders situated beside the lead groove which, when the member is in a rear- JOHN ERIK PLATON. 

